Wildcards
zero_or_more(..., type = c("greedy", "lazy", "possessive"))one_or_more(..., type = c("greedy", "lazy", "possessive"))
maybe(..., type = c("greedy", "lazy", "possessive"))
shortcuts
, R variables, text, or other rex
functions.
the type of match to perform.
There are three match types
greedy
: match the longest string. This is the default matching type.
lazy
: match the shortest string. This matches the shortest string from the same anchor point, not necessarily the shortest global string.
possessive
: match and don't allow backtracking
zero_or_more
: match ...
zero or more times.
one_or_more
: match ...
one or more times.
maybe
: match ...
zero or one times.
Other rex: %or%
, capture
,
character_class
, counts
,
group
, lookarounds
,
not
, rex
,
shortcuts